Managed by The High Commission for the Development of Arriyadh (HCDA), the project includes six metro lines covering 176 km and 85 stations, in addition to 24 bus routes covering 1,900 km and 3,000 stations and stops. At a total cost of US$27 billion, it is Saudi Arabia's first public transportation network and the largest infrastructure project worldwide.
Riyadh's population of 6.5 million today is expected to reach 8.3 million by 2030. Its streets currently handle 9 million car trips daily, increasing the need for a public transit network.
For its rolling stock, HCDA commissioned three different global manufacturers:
Construction of the project will finish at the end of 2018. Testing of the service will start simultaneously in the last quarter of the same year, with the objective to begin service to the public in the second half of 2019.